diff --git a/Blocks.md b/Blocks.md
index bc3aa51..b522c46 100644
--- a/Blocks.md
+++ b/Blocks.md
@@ -37,7 +37,8 @@ Superior Case
 ![Superior Case](http://i.imgur.com/6dmgI2i.png)
 
 The Computer Case is the basic building block for computers and houses the computer's extension cards, RAM and hard disks.
-- Slots: 3/2/3.
+- Slots: 3/2/3.  
+  Note that the the third storage slot is for floppy disks, *not* for a third hard disk.
 
 Charger
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